Public bug reported:
After I manually applied the fix for
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2160129 ,
now qemu process can launch when SEV-SNP is requested.
However guest operating system does not boot up properly.
Looking at console logs I found the following error indicating a problem
with grub boot loader.
BdsDxe: failed to load Boot0002 "Grub Bootloader" from
Fv(7CB8BDC9-F8EB-4F34-AAEA-3EE4AF6516A1)/FvFile(B5AE312C-BC8A-43B1-9C62-EBB826DD5D07):
Not Found
This problem is consistently reproduced with Ubuntu 26.04 used in both
guest and host. (For guest I'm using the official cloud image)
$ dpkg -l | grep qemu-system
ii qemu-block-extra 1:10.2.1+ds-1ubuntu3.1
amd64 extra block backend modules for qemu-system and qemu-utils
ii qemu-system 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries
ii qemu-system-arm 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (arm)
ii qemu-system-common 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (common files)
ii qemu-system-data 1:10.2.1+ds-1ubuntu3.1
all QEMU full system emulation (data files)
ii qemu-system-gui 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (graphical display and
audio modules)
ii qemu-system-mips 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (mips)
ii qemu-system-misc 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (miscellaneous)
ii qemu-system-modules-opengl 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (OpenGL display
modules)
ii qemu-system-modules-spice 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (spice display modules)
ii qemu-system-ppc 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (ppc)
ii qemu-system-riscv 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (riscv)
ii qemu-system-s390x 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (s390x)
ii qemu-system-sparc 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (sparc)
ii qemu-system-x86 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (x86)
$ dpkg -l | grep ovmf
ii ovmf 2025.11-3ubuntu7
all UEFI firmware for 64-bit x86 virtual machines
ii ovmf-amdsev 2025.11-3ubuntu7
all UEFI firmware for AMD SEV-SNP confidential virtual machines
ii ovmf-generic 2025.11-3ubuntu7
all UEFI firmware for 64-bit x86 virtual machines
ii ovmf-inteltdx 2025.11-3ubuntu7
all UEFI firmware for Intel TDX confidential virtual machines
** Affects: edk2 (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
After I manually applied the fix for
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2160129 ,
now qemu process can launch when SEV-SNP is requested.
However guest operating system does not boot up properly.
Looking at console logs I found the following error indicating a problem
with grub boot loader.
BdsDxe: failed to load Boot0002 "Grub Bootloader" from
Fv(7CB8BDC9-F8EB-4F34-AAEA-3EE4AF6516A1)/FvFile(B5AE312C-BC8A-43B1-9C62-EBB826DD5D07):
Not Found
+
+ This problem is consistently reproduced with Ubuntu 26.04 used in both
+ guest and host. (For guest I'm using the official cloud image)
$ dpkg -l | grep qemu-system
ii qemu-block-extra 1:10.2.1+ds-1ubuntu3.1
amd64 extra block backend modules for qemu-system and
qemu-utils
ii qemu-system 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries
ii qemu-system-arm 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (arm)
ii qemu-system-common 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (common files)
ii qemu-system-data 1:10.2.1+ds-1ubuntu3.1
all QEMU full system emulation (data files)
ii qemu-system-gui 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (graphical display
and audio modules)
ii qemu-system-mips 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (mips)
ii qemu-system-misc 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (miscellaneous)
ii qemu-system-modules-opengl 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (OpenGL display
modules)
ii qemu-system-modules-spice 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (spice display
modules)
ii qemu-system-ppc 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (ppc)
ii qemu-system-riscv 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (riscv)
ii qemu-system-s390x 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (s390x)
ii qemu-system-sparc 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (sparc)
ii qemu-system-x86 1:10.2.1+ds-1ubuntu3.1
amd64 QEMU full system emulation binaries (x86)
$ dpkg -l | grep ovmf
ii ovmf 2025.11-3ubuntu7
all UEFI firmware for 64-bit x86 virtual machines
ii ovmf-amdsev 2025.11-3ubuntu7
all UEFI firmware for AMD SEV-SNP confidential virtual
machines
ii ovmf-generic 2025.11-3ubuntu7
all UEFI firmware for 64-bit x86 virtual machines
ii ovmf-inteltdx 2025.11-3ubuntu7
all UEFI firmware for Intel TDX confidential virtual machines
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https://bugs.launchpad.net/bugs/2161231
Title:
SEV-SNP guest fails to boot due to issues with grub boorloader
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2161231/+subscriptions
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